PLoS ONE, 2017 Chondrichthyes, which include Elasmobranchii (sharks and batoids) and Holocephali (chimaeras), are a relatively small group in the Mediterranean Sea (89 species) playing a key role in the ecosystems where they are found.
JOSÉ CARLOS Báez +2 more
exaly +2 more sources
Beyond the Meal: Trophic Controls by Pelagic and Demersal Chondrichthyes in Two Different Mediterranean Marine Food Webs [PDF]
Ecology and EvolutionPelagic and demersal Chondrichthyes can assume different patterns of trophic controls on marine food webs, sustaining the functioning of marine ecosystems.
P. Ricci +7 more
doaj +2 more sources
Evolutionary origins and development of saw-teeth on the sawfish and sawshark rostrum (Elasmobranchii; Chondrichthyes) [PDF]
Royal Society Open Science, 2015 A well-known characteristic of chondrichthyans (e.g. sharks, rays) is their covering of external skin denticles (placoid scales), but less well understood is the wide morphological diversity that these skin denticles can show. Some of the more unusual of
Monique Welten +2 more
exaly +2 more sources
Length-weight relationships for eight Chondrichthyes from the north-eastern Atlantic Ocean
Egyptian Journal of Aquatic Research, 2023 Length-weight relationships (LWRs) are pivotal for comparative life-history studies, conservation strategies and ecosystem modelling among regions. They provide essential information on the growth, fitness and wellbeing of a population in an ecosystem ...
Mafalda Freitas +2 more
exaly +3 more sources
Rare evidence of shark-on-shark trophic interactions in the fossil record [PDF]
Acta Palaeontologica Polonica, 2021 Direct evidence of chondrichthyan trophic interactions in the fossil record is largely limited to bite traces on prey items but may also be found within the gut contents of exceptionally well-preserved individuals or as inclusions within coprolites ...
VICTOR J. PEREZ +2 more
doaj +1 more source
Genetic Diversity and Population Structure of Squalus cf. mitsukurii (Chondrichthyes: Squalidae) Revealed by ddRAD Sequencing. [PDF]
Anim GenetABSTRACT Assessing genetic structure across ocean basins is essential to understand connectivity and guide conservation in data‐deficient open‐water sharks. In this study, we examined the population genomics of Squalus cf. mitsukurii by analyzing tissue samples collected from two distant regions: California, USA (Pacific Ocean) and Pernambuco, Brazil ...
Adachi AMCL +11 more
europepmc +2 more sources
Ecology and Evolution, 2021 Batoids, distributed from shallow to abyssal depths, are considerably vulnerable to anthropogenic threats. Data deficiencies on the distribution patterns of batoids, however, challenge their effective management and conservation.
Fernando Tuya +8 more
doaj +1 more source
Environmental DNA captures elasmobranch diversity in a temperate marine ecosystem
Environmental DNA, 2022 Many sharks, skates, and rays (elasmobranchs) are highly threatened by the activities of commercial fisheries, and a clear understanding of their distributions, diversity, and abundance can guide protective measures.
Zifang Liu +8 more
doaj +1 more source
First record of chimaeroid fish Ischyodus from the Upper Jurassic of southwestern Gondwana [PDF]
Acta Palaeontologica Polonica, 2021 This study presents two specimens of Chimaeriformes from Upper Jurassic strata of central Chile. The material was recovered from Tithonian levels of the Baños del Flaco Formation and includes two different individuals, one preserving two articulated ...
Rodrigo A. Otero +5 more
doaj +1 more source
Late Mesozoic marine Antarctic fishes: future perspectives based on the newly collections recovered in the Ameghino and López de Bertodano Formations [PDF]
Research & Knowledge, 2017 Nowadays, notothenioids are the teleostean group that dominates marine Antarctic waters. However, during the Mesozoic a diverse ichthyofauna inhabited the sea that surrounded Antarctic.
Soledad Gouiric-Cavalli +10 more
doaj +1 more source